S2-STW9C2SB LED 3030 White SMD Equivalent & Substitute Parts

Part Overview

The S2-STW9C2SB is a Seoul Semiconductor 3030 white surface mount LED designed for lighting applications. This part is currently obsolete, making equivalent and substitute parts necessary for ongoing production and design updates. The device operates at 6.1V forward voltage with a 100mA test current, 120° viewing angle, and 1212 (3030 metric) package footprint. Substitute parts maintain electrical and mechanical compatibility while offering active product status and improved thermal characteristics.

Substiute Parts

S2-STW9C2SB

Seoul Semiconductor Inc.In Stock: 922S2-STW9C2SB Datasheet

Current PartRFQ

STW8C2SB

Seoul Semiconductor Inc.In Stock: 178954STW8C2SB Datasheet

Parametric EquivalentRFQ

STW8C2SB-NZ

Seoul Semiconductor Inc.In Stock: 987STW8C2SB-NZ Datasheet

Parametric EquivalentRFQ

STW8C2SB-NZ(DISTY)

Seoul Semiconductor Inc.In Stock: 1117STW8C2SB-NZ(DISTY) Datasheet

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STW9C2SB

Seoul Semiconductor Inc.In Stock: 4263STW9C2SB Datasheet

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GW PSLR31.EM-LR-XX33-1-150-R18

ams-OSRAM USA INC.In Stock: 764GW PSLR31.EM-LR-XX33-1-150-R18 Datasheet

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GW PSLR31.EM-LR-XX35-1-150-R18

ams-OSRAM USA INC.In Stock: 747GW PSLR31.EM-LR-XX35-1-150-R18 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the S2-STW9C2SB are grouped based on the following critical parameters that determine functional compatibility:

Primary Compatibility Criteria:

• Package / Case: 1212 (3030 Metric) — identical footprint and mounting interface
• Voltage - Forward (Vf) Typical: 6.1V to 6.2V — acceptable operating voltage range
• Current - Test: 100mA to 150mA — compatible drive current specifications
• Viewing Angle: 120° — identical optical characteristics
• Mounting Type: Surface Mount — same assembly process
• Color: White — identical color specification
• Maximum Current: 200mA — consistent current rating

Grouping Logic:

Group 1: Seoul Semiconductor 3030 Series (Direct Manufacturer Equivalents)

• STW8C2SB, STW8C2SB-NZ, STW8C2SB-NZ(DISTY), STW9C2SB
• Same manufacturer, same 3030 series, identical package and electrical parameters
• All active product status with improved thermal resistance (10°C/W vs. 25°C/W)
• Differ only in CRI rating (80 vs. 90) and inventory availability

Group 2: ams-OSRAM DURIS® S 5 Series (Cross-Manufacturer Equivalent)

• GW PSLR31.EM-LR-XX33-1-150-R18, GW PSLR31.EM-LR-XX35-1-150-R18
• Different manufacturer but identical package, footprint, and optical specifications
• Forward voltage 6.2V (within acceptable tolerance of 6.1V)
• Test current 150mA (compatible with 100mA-200mA range)
• Active product status with established supply chain

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Seoul Semiconductor 3030 Series):

STW9C2SB is the preferred direct substitute, offering identical electrical specifications (6.1V, 100mA test current, CRI 90) with active product status and improved thermal resistance (10°C/W). This part maintains the original CRI rating while providing superior thermal performance.

STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY) are functionally equivalent with identical electrical parameters but feature CRI 80 instead of CRI 90. These parts are suitable for applications where color rendering index is not a critical specification. All three variants are active products with 10°C/W thermal resistance and represent the same base product (STW8C2) with different packaging or distribution designations.

For Cross-Manufacturer Substitution (ams-OSRAM DURIS® S 5 Series):

GW PSLR31.EM-LR-XX33-1-150-R18 and GW PSLR31.EM-LR-XX35-1-150-R18 provide cross-manufacturer compatibility with identical package footprint and optical characteristics. Forward voltage is 6.2V (0.1V higher than original specification) and test current is 150mA (50mA higher than original). Both parts are active products with ROHS3 compliance and established supply availability. These substitutes are suitable for applications with flexible voltage and current specifications within the 200mA maximum rating.

Selection Criteria:

• Choose STW9C2SB for direct replacement with identical CRI requirements
• Choose STW8C2SB variants when CRI 80 is acceptable and maximum supply availability is needed
• Choose ams-OSRAM DURIS® S 5 parts for cross-manufacturer sourcing or when thermal resistance of 17°C/W is acceptable
• All substitutes maintain identical package dimensions, mounting type, and viewing angle
• All substitutes are ROHS3 compliant and suitable for production environments

Frequently Asked Questions (FAQ)

Q: Can STW8C2SB replace S2-STW9C2SB directly?

A: Yes. STW8C2SB is electrically compatible with identical forward voltage (6.1V), test current (100mA), maximum current (200mA), and package specifications. The primary difference is CRI rating (80 vs. 90). If color rendering index is not specified in your application, this substitution is valid.

Q: What is the difference between STW8C2SB, STW8C2SB-NZ, and STW8C2SB-NZ(DISTY)?

A: All three parts share the same base product number (STW8C2) and identical electrical specifications. The suffix designations indicate different packaging or distribution channels. Electrically and mechanically, they are equivalent.

Q: Can I use ams-OSRAM DURIS® S 5 parts as a substitute?

A: Yes, with design consideration. GW PSLR31.EM-LR-XX33-1-150-R18 and GW PSLR31.EM-LR-XX35-1-150-R18 maintain identical package footprint (1212/3030 metric), viewing angle (120°), and maximum current rating (200mA). Forward voltage is 6.2V (0.1V higher) and test current is 150mA (50mA higher). These differences are within typical operating tolerances for LED applications but should be verified against your circuit design.

Q: Why is the thermal resistance different between substitutes?

A: Thermal resistance varies based on internal die design and package construction. Seoul Semiconductor 3030 parts offer 10°C/W, while ams-OSRAM DURIS® S 5 parts offer 17°C/W. Lower thermal resistance indicates better heat dissipation. For high-current or high-ambient-temperature applications, Seoul Semiconductor parts provide superior thermal performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts are ROHS3 compliant, matching the original S2-STW9C2SB specification.

Q: What is the height difference between Seoul Semiconductor and ams-OSRAM parts?

A: Seoul Semiconductor 3030 parts have a maximum seated height of 0.031" (0.80mm). ams-OSRAM DURIS® S 5 parts have a maximum seated height of 0.028" (0.70mm). This 0.003" (0.10mm) difference is negligible for most PCB assembly processes but should be verified if height clearance is critical in your application.

Q: Can I mix different substitute parts in the same design?

A: All listed substitutes are mechanically and electrically compatible within the specified parameters. However, for consistent optical performance (brightness, color rendering), it is recommended to use parts from the same manufacturer and product line within a single application.